ASTM-B946 › Historical Revision Information
Standard Test Method for Surface Finish of Powder Metallurgy (P/M) Products
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Scope
1.1 This test method covers measuring the surface finish of powder metallurgy (PM) products at all stages of manufacturing from green compact to fully hardened finished component.
1.2 This test method provides the definition and schematic of some common surface finish parameters (Ra, Rt, and Rz ISO)
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.
Significance and Use
The surface finish of a component may be critical for certain applications, affecting properties such as wear resistance, fatigue strength, and coefficient of friction.
Surface finish may also be critical for component assembly or system performance. Dimensional fit and mating surface interaction may require certain surface finish requirements to meet performance specifications.
Keywords
PM; powder metallurgy; powder metallurgy parts; stylus; surface finish; surface roughness; Metal powders; Powder metallurgy (P/M) materials; Surface finish; Surface roughness measurement; ICS Number Code 25.220.40 (Metallic coatings); 77.160 (Powder metallurgy)
To find similar documents by ASTM Volume:
02.05 (Metallic and Inorganic Coatings; Metal Powders and Metal Powder Products)
To find similar documents by classification:
77.160 (Powder metallurgy Including sintered metal materials and hardmetals)
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Document Number
ASTM-B946-11
Revision Level
2011 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
May 1, 2011
Document Type
Test Method
Page Count
3 pages
Committee Number
B09.05